Saw-sharpening machine



3 Sheets-Sheet 1.

(No Model.)

T. OOONNOB.

SAW SHARPENING MACHINE.

Patented July 29, 1884.,

INVENTDEL- (No Model.)

3 Sheets-Sheet 2. T. OGONNOR.

SAW SHARPENING MACHINE.

N0. 302,766. Patented July 29, 1884.

N. PETERS. Plwlo-Ldhngmpher. Washinglan, D. c.

3 SheetsSheet 3.

Patented July 29, 1884.

e. m l T G N I E If MM 5 W IM (No Model.)

' T. OCONNOR.

SAW SEARPENING MACHINE.

WITNEZEEES- lUNirh rarns PATIENT 'rrrcn.

THOMAS OCONNOR, OF SAN FRANCISCO, CALIFORNIA.

SAW- -SHARPENING MACHINE.

SPECIFICATION forming part of Letters Patent No. 302,766, dated July 29,1884.

Application filed December 3, 1883. (No model.)

To all whom it may concern.-

Be it known that I, THOMAS OGoNNon, a citizen of the United States,residing at San Francisco, in the county of San Francisco and State ofCalifornia, have invented a new and useful Saw Gummer and FilerCombined, of which the following is a specification. v

My invention relates to improvements in saw gummers and filers combined;and the object of my invention is to provide a machine which may beconverted at will into either a gumming or a filing machine; and itfurther consists in certain details of construction and arrangementwhich will more fully appear hereinafter.

In the accompanying drawings, Figure 1 is a top view of my improvedgumming-ma chine. Fig. 2 is a side view of the same. Fig. 3 is acrosssection taken on line a: of Fig. 1, looking to the left. Fig. l isa crosssection on line as 00, looking to the right. Fig. 5 is a top viewof the machine, showing the gumming-wheel removed and the saw-filingattachment substituted therefor. Fig. 6 is a side view of the deviceshown in Fig. 5. Fig. 7 is a sectional view of the file-driving disk.Fig. 8 is a section taken on line 00 00, Fig. 6. Fig. 9 is a sideelevation of the saw-rest. Fig. 10 is a front View of the saw-rest.Fig.11 is a plan view of the saw-rest plate. Fig. 12 is a top View ofthe base-block of the saw-rest. Fig. 13 is a plan View, and Fig. 14. isa vertical section, of a saw-rest for band-saws.

Similar letters of reference are used to indicate like parts throughoutthe several figures.

The fran-ie-work which carries the operative mechanism is made in twoparts, A and B, as shown in Fig. l, the partAbeing loosely journaledupon a shaft, 0, which in turn is loosely journaled in the wall-plate D.The two portions A and B of the frame-work are pivoted together by aset-bolt, E, which permits of the forward portion .of the frame beingtilted sidewise to any desired angle, and the whole frame may beadjusted to any vertical angle. by moving the said frame upon the shaftO,to which it is pivoted. The frame and the operating mechanism iscountcrpoised by the balance-weight F, attached to a cord passing over apulley and made first to the forward end of the frame 13, as shown inFig. 2. Near the forward end of the frame 13,1 journal in suitablebearings the removable shaft G, upon one end of whichis fastened theemery or gumming wheel H. Upon the shaft or axle G, I key a pulley, I,driven by a belt-connection with the double pulley J, keyed upon theshaft 0, which is the drivepulley for the whole mechanism. (See Figs. '1and 2.)

The saw-rest for holding circular saws consists of a post, K, attachedby a set-bolt to a base-plate, L, which in turn is clamped to the tableby a set-bolt passing through a slot cut in the said base-plate. Thesaw-clamp can be adjusted 'to any height upon the post K by means of asuitable set-bolt, as shown in Fig. 9. This clamp is provided with aprojecting screw-threaded mandrel having its inner end made octagonal orsquare, and of. asize smaller than the mandrel-hole in the saw. Overthis squared portion of the mandrel I place the cone-shaped plug 0,which is forced into the mandrel-hole by a screw-plug, P, which may beclamped at any point by a setscrew, Q. The bearing-plate R is securedupon the top of the post K by screw-threaded bolt and nut, as shown, hesaid bolt passing through a longitudinal slot cut in the bearing-plateand by means of which the horizontal projection of the bearing-plate canbe regulated. The front edge of the bearing-plate is made semicircularin plan, and is also provided with a semicircular slot through which ispassed a set-bolt for the purpose of clamping an auxiliary or secondbearingplate S at any desired point upon the curved edge of the mainplate. The outer face or edge of this auxiliary plate is made straight,so as to afford a firmersupport to the blade of the saw. To the rear ofthe main bearingplate I attach, by a swivel-joint, the stay-rod or braceT, which is extended backward from the post to the wall or anyconvenient point upon the workmans bench.

From the forgoing it will be seen that I am enabled to provide asaw-gummer of cheap and simple construction and not liable to get out oforder, and one in which the saw may be set at any desired angle ofinclination and at any height; and, furthermore,that by means of thepivoted and jointed frame carrying the gumming-wheel I am enabled toincline the said wheel at any desired angle for the pursired point alongthe slot.

Upon the under side of the left-hand side bar of the frameB there isformed a dovetail, X, over which is slid the file-carrier Y, and alongwhich it is reciprocated. The lower portion of the file-carrier is madewith a double-flanged rib, Z, or of an inverted-T shape, for the purposeof receiving the plates A A, which are clamped at any desired pointalong the rib by set-bolts, and are furthermore braced and stayed by atension-bolt, B. The lower portion of these plates A A are provided witha transverse slot 3, within which is clamped the self -centeringtoolholders D D, which carry the file E. Awristpin, 1?, is formed uponthe carrier Y, which receives one end of the connecting-rod G, leadingfrom the plate-wheel U, as shown in Fig. 6, and by. this means thereciprocation of the file is produced when the driving-shaft and pulleysare rotated.

For filing band-saws, Iremove the circularsaw clamp from the post andreplace it by the device illustrated in Figs. 13 and 14, whichrepresents a saw-rest made in two portions, -II H separated from eachother by a narrow plate, I, so as to leave a sufficient space to receivethe saw-blade. Friction-rollers J J are placed within this opening, andbear against the blade of the saw and keep it from binding upon thesides of the saw-rest.

Upon the right-hand side of the frame B,

I attach the hinged pawl-feeder K, (see Fig.

8,) which is a plain bar of metal having its lower end resting in thesaw-teeth, and as the frame is raised by the operator to clear the filefrom a tooth, the feeder will be drawn back a short distance, and whenthe device is lowered to file the next tooth, the action of loweringwill cause the saw to be moved forward the dis tance of one tooth.

In order that the vertical play of the frame A B may be regulated, Iattach to the wallplate D a semicircular slotted arc, L, and pass aset-bolt, M, from one of the sides of the frame A, through, the saidslot. Set -bolts N" N are then placed in the slotted arc, above andbelow the bolt M, for the purpose of limiting the rise and fall of thesaid frame A, as it is tilted up and down by the hand of the operator.

Having thus described my invention, what Iclaim, and desire to secure byLetters Patent,

1. In a combined saw guminer and filer, the combination of the plateD,having slotted are L, the shaft 0, the pivoted frames A B, connected byset-bolt E, and the set-bolts M N N, for adjusting the frame,substantially as described.

2. In a combined saw gummer and filer, the combination of the pivotedand adjustable frames A B, the latter having a dovetail, X, the shaft 0,having pulley J and slotted wheel U, provided with a wrist-pin, WV, thereciprocating file-carrier, ,Y, fitted to the dovetail X, and havingwrist-pin F and the connecting-rod G, substantially as described. I

3. In acombined saw gummer and filer, the combination of the adjustableframe B, having dovetail X, the reciprocating file-carrier Y, fittedtosaid dovetail, and provided with a double-flanged rib Z, theclamping-plates A B having slots 0, the tension-bolt B, self-centeringtool-holders D D, and file E, substantially as described.

4. In a combined saw gummer and filer, the combination, with the pivotedframes A B, of the saw-feeder K, hinged to the side of the frame B,substantially as described.

In testimony that I claim the foregoing I have hereunto set my hand andseal.

THOMAS o oonnon. n s.]

